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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bda7ca9fc8dc3f4dc55caffe0d6f808c7c2a0f2aba491c79bf9df87c6a97ffbf' 
  AND token = 'hQRAohFCuySrnH2pxcxV9tylgdaOdN6jL4HjfAU06QI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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