Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '841f7cdb0c5378498e1c309b1d90317a89ba3de09e90e590f550ff1292731d6f' 
  AND token = 'rgQb98mPpz15dlA6W6YAe0P7FsbSHFyVXYfksFyM4mU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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