Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bc26c0a6717b3143ef4c829f83485b18841041f0d9a7bab8fb14b53fdfa02a1' 
  AND token = 'ylbcm7P2rxZJRZzXI5S63O8fMdty0tD6dwKTlS/0mok=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}