Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'a2585dbbbd1b8a904ad5d468608c177bf2d50fcaa9437c5c529326535b9295a9' 
  AND token = 'WJ1GMJaHxJsb1Takku41zwOPf86fdyXXvUh/yTMHxE4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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