Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '033abf16587a3bf17fab56d4210626abd0c658220bf384486e34697731bee98f' 
  AND token = 'M/l7tmF4sC1ziD37d8Pe4Ee4ceB6iaSj8IYm1ptDFBE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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