SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '07c414058e4fc3e5015075b4184350d273c238b3b8315cc2b9fa8c8787e4ed73' 
  AND token = 'qJHE0plzxSKL3/dsZ+6xVmDkajb+W9uiumqvFfAKUPE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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