Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3721f7ea5d8d107b8116b43390add9ee4e5a3c304c5b526378147f58ebf5f501' 
  AND token = 'OXUxO5gNFt1Qf3/EJhOtdXcdcVi4Jw9M3P18OdANUXM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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