Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7e929ebb8bbe838f8e9769f2fa23fd4ef2b15d3c5179909dca816e6717366b6' 
  AND token = '2T32tIXpFReeAIra4r0kqlZ7DqmUnYAcpCJsvOqX9LQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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