Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'af7b82a2924ae7b9ef561d74e33cb423bfb182cf0821efab089b1e1b80893024' 
  AND token = '/i6dJJriUemraA3Lk05S0+jTCTpRLFxyMU/SA4bv9cs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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