Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7532308472524ecaafa7eedfd11146b7817ec1bd063ef7b62266dda8970fe68a' 
  AND token = 'nB6Ccg9R4GJUkTRetyh6c8U2k71VKr6FLCKMgKnAljg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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