Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06016aaebf522925b81e599e4005e67cb67fe0f8e23908ac2faa561c390d83d1' 
  AND token = 'AMqguR8op5yfZYCv7+OSSEzFY7IEqb85AEWpoJdiZqo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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