Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e9393465d8d843be59c76b9bc0adde9da472572790308ecba15cdce596e494b' 
  AND token = 'ebVZFfuSJZabvVmX+Cf+pZIBmDVO+yx70j/MoqoOW9A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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