Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a72ce1ca2b6b7192e5ca1a5d543be61bada63b1d96910f186f88bb1a51a6b55' 
  AND token = 'auSJtntT3tFC9wlgivpMxCulEja+EolP96+DxGXjp7s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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