Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '039095e122a79c2c1575fddab656a49a7812069a4cfd22236d3c1fdae56e8188' 
  AND token = '8H3td0SlQup8RY7Gp0/OMC2uFWfX2FZE3vI26lLiM5A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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