Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '122c1109f2a28a7ad780951393a5462d6e643946a000aa4c9757aabc8680e28b' 
  AND token = 'a1beXPdV5D+Iy2MlTi9zFrtJRDSuh5HKe4+ik9ny7oQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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