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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2290c1e6962bbf546050795e00a99d678b281417c72344a4a6f143c99a129028' 
  AND token = 'gI4Ze1xrFV/Iff4qms0TPB+HCSQAoAin8a2jXvGw2cM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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