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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b0a978375ab395ade87953592b38c0e9cf19a4c419dcd602104d6cc701b91057' 
  AND token = 'N5Pg7n5BM0u5ayz+PRpTbrJkyEJqg7ujBzaH7jn52Ig=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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