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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ddabeb619161b6cbcaf6168b18b8940214682f8fb6e9684528895194a2ea6c56' 
  AND token = '9oK7FAeBH4tgu2/Gwkd1q+/1bNHDY8yma1WPb1WI2U8=' 
  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"
    }
  }
}