Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1e7617eff7ad78d83f068ea0651c6ef52491a86f86a6508a456394f52377929' 
  AND token = 'xx64GxuT02rgvTWlWXFp6eYbZ44bx44j1OWj6wpZhZs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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