Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fad57d90287ce614a00269164bbce867b059fe6188cfc2923fed138f3a0699ed' 
  AND token = 'O20yuYEZyuHrO7NYfL749ezmQmZ4r4M6nAWmLykoo7M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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