Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72c2296bfc3a424c7a3805f5dd29736fd680022bbe6e5f1761993bae2379897c' 
  AND token = 'ow/np/fOXcuR7R/4PlXHzCxDjLkkq2EAW3JNk/tgmvc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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