Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a0a977225aa7a5fc2807e107e0dddadcdbf055586b3be65d5f8920989d010fb' 
  AND token = '2oA9ujYmlLq2ocUoWkONitlptcMERsowYTgMTQu9OLI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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