Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41068aab1b84605c58be19c8b559ffb23dc92345f0ae448d80d0d8389d43a91d' 
  AND token = '23oVdzAZZ+IiHsuW/afj3RduevHsZfVSxkRLa5ndtZA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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