Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd827b297d72cc8f82692460a0470ec55d98aff3512c06d84ca11f250497ae32f' 
  AND token = 'C9DBB0/5n5D5cMKLCwI6MNbcZtnJKeB1BakGLvF78+c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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