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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '4130e509a5140a035af31b82722fd4c74c39d78b0cbdca997362a3f83f0d92bb' 
  AND token = 'M1h+P2rdUmg0fryHjqFxdQ4Fkfx0OymjxK6kWZON23k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}