Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '29747aaae6ad9dec83c9b345c7a1741619368346b16d46277fee88e98e72de1b' 
  AND token = 'q5NiNc0zenozMFcPQ6O0L0wAXtBsVfvdmR+fmgiyDHk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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