Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '208f55e7caa14415aab06fefd89a0a1806f6cab0271e55ebcf4edb85b959467e' 
  AND token = 'qtXbM22Fap/g/TTwrZS8F65t3Ci0bd/KUwbPMHV0Za4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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