Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58e8fad1a1efa0bc69786277f67c2472ed427a150a50e35306e9789270f49795' 
  AND token = 'bIK39EPlvL7qPPhc4YdZwuCO0wWfOLwabCqpQXtuL0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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