Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7936d9d2966199a22f4e6c221ae241343e07360d110913d50d81c08b04be7d4' 
  AND token = 'v0DxPiPhinCPi6Fmrqq3BgNS2qSPKDQDY1POJ/hVN0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}