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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '0c614748bdc1b48aa53adcf606c70de258faebf8ce7b75a5554d0081b5f9e968' 
  AND token = '5yBLdgMXmbOCZqhuXC7ofd/yWiNuaw85VuRy7Xz6f/s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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