Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0699c445e28823e6a9de39ef04d0e50e19ee48ab690d5668d65bf785123ffdc3' 
  AND token = 'zhBaGCG5Ncc0X2FHOiWxD/1B5roWdpe/V2iR5fY4SRQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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