Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19e1cf4388b75d5f34c1b23821a1242b92ca3fc52d902e9b00303bf68a5985b1' 
  AND token = 'AfwWOSWbh6U3JrcZMCjean63PuDBT0JM4rzTLaH4PJw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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