Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d2f1471d61fb1aa92a480b0a54dc22d78e103d16a0e77f1b7062f482070ca47' 
  AND token = 'x1hidH3/wREpzXV19jgBSmxcCSH0ma8Dnu7Xomq7ZOQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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