Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ada166a073d03afdad95364ff8c23917bc51558798dcedda0a33ba0bff75b576' 
  AND token = 'FARluGEmjgdc/MTqH1JD7YyFKG6KlkZUWrn8wLK/c5E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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