Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a3961089d78190a88ea7ce161c10a3a89d68a272155c78814eea890684527142' 
  AND token = '/mggRmAyATcvckRqzrS/dFJby1DXejTrst4JhwmlErA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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