Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db2f9f036bdbacea8858403915faba087a9da2d152afff15d4a49c0f6011292e' 
  AND token = 'te+jHdWF7fCZ3zrQhcOC/qcMJL1ULeOm951kf02eKZ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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