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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9a28067ea93588fb55401c97bf8b62fa468a9b677ae710c661d2f6bf3ad1579a' 
  AND token = 'BRb4qshI1KfT5uhXUhx4CMPIDNfh/FR1FI5Bx+tKb8k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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