Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25930513ff7025f5f7e683a6cb3fd59610e551d72aa4bff00f67d39aae803d65' 
  AND token = '4CvhDOIHtOwaCPsomw3npB785+oanF2Vi/N9xLZ7wek=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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