Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ccf2b36c7a33aaaf7e60a308ac0eecaee3bdd23d31b1dd4d3a3eeaead6dfbef' 
  AND token = 'hC5ZL/LX6UlVWa9dm/EcK5Dta8OR7d0IlYFhYbwILUI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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