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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd0f30c24d58a2b9670cde2f87bad44b1de047c71367b08db438d727bc266fdaf' 
  AND token = 'eSq2JR3WS6AvFTQC/05SzqX9w4iosIbx3nkVa7ROlUw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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