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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '670e354ace1b02afc440bddb0bbc1ccc8b60cfeb1feb30567b86f73c6494e129' 
  AND token = 'wSsJMGk4f8781j+08uzxbhexT0Q3rOLYYWGpaamwIZE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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