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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5bf52655b190ffcac130ba9d424d25023d3eceb5a9f97e6bf9259d677957ad14' 
  AND token = 'qAkm2i2Q8u/jKnnSSoxbomwR5Wj3b629WYYmLoLBR8c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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