Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f5ae3fc2d61f5b38b8f15162f27095ac772a0b41fb4b394bdbd5bffab59a911b' 
  AND token = 'Jm3BeXzJOnG7vVZpo7nULdkMrW/0p2nzxUYpmw0nZ24=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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