Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0217fd5479bcc086fb095c974d2ca98d332adcd0f0abc2a454336b0f8aa68b62' 
  AND token = '0cjXokodhrwG1Ga1MZEs6ehrV5ltK6X5+2ux24Jq3AA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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