Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e916fcadbc115c89d8e2ff4097d61ca169bd227e88d01bca7f2190839ae8487b' 
  AND token = 'n8/n5+BpeIx4nmZVBJX37mTFzAVfakO08FW0Fkp4Ies=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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