Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cdee5eb124a87f95ecfa42813fddebe93502446371dd72df951934fbc9b066ec' 
  AND token = 'OVY9gUiqDpj9+ZLfs9GHE5xthtaHOyj1kMWFMXI8qGY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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