Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34783dadf7d8dbac0f9d2a33704ea0816939af7ff310d195f5a529a267b740d6' 
  AND token = 'bwHJN1u6vuN4dYJFDAOcZbTx3KixfKIDHo9TwOTtlm0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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