Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5cacdde7d4a776820d357ee46877ccb9e8f752db4e336e212feba41f8269d92e' 
  AND token = 'JU24oO7aPafuhqHp802Y7HH904j9tyiS3cBOyDPzpYE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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