Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c5ccc8cb246ec3236ba2383bef88c77e72966b2c262ed74886918c3f9b696f9e' 
  AND token = 'zQVN1d8iKxKyzI1+d2awelCYH7Tjz2ubJS2Ulk4Za6w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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