Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2555380910aa62d8fff68a29dac5177c96677b596af314b013c9c84fc5e3861b' 
  AND token = 'y6g0y1m6W1XKTCqE6Egvt32kHauNJBn/DPEdSqVPeaQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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