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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '67b1618bb3edacc0ecd00f76de7684150f745540e09c26d63352067c61cb6c63' 
  AND token = 'p8m6wYH8jx8xSXcOuB5c4+MZRzkyWlNqjOUnrlXwhN0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

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