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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32f7d9239bccf6aaf19bb56023fac6cf6b0b47b4ae38f223ed8eacbc638cf003' 
  AND token = 'tWjXqc28oxLgWYRIHiiB+HBYDPCRaCerNL9tVFmkbFU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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