Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7713c2e5e136068cc301ef1aada1f878d695b62bf7a28cb345544a0176b657f' 
  AND token = 'gJG17EHXW41gfNRHbEVX+op2kSKYwBAdvWV67oYeZIU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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