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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '059c9b15467c7565b59ac49c53b883e234303cea3da5bf2f742648727a84ca76' 
  AND token = 'TSAHnIh5gIr7NmnjtDYBgX4+HrqkvE4rfCHTD9gTm1w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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