Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '71d20a796683f72062466ffd8f1903c02cdb915aaa0833eebba6514b802c30b7' 
  AND token = 'Ayja4t7vuecPIqycR49RCCM8HqqSHy7RPmsc7zvO7BM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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