Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0fddeca98e82d68de57a6a302b9d3e6b4649dc914439a6c963fc6833b23634d' 
  AND token = 'qsBScP7VrrmwTOhvoeJqcx1neXVI6dvhTnmnQsgsFNQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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