Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e62c0786c61d4312baf3fef9034748ee389c243834dec90367e523e0b6c3c3a4' 
  AND token = 'VkoI9LWnG+EI6m0scqFX/r5ENVHE6n6k8alft5U0SQ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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