Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fba6a12c9edbc1857b8f97a5fbdae070889c74fe302424b9df511823eb9af2fa' 
  AND token = 'S9WeHMyOQCmq+6yzOHzq8VVk6VcYebOuAu+8g30xiYY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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