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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc432fc5c5437dc2d24723c52c3752eaaa3f9013fe346503c5c8fe3752d92a4c' 
  AND token = 'geaQjqJsGIZctTHtK8/8JM5oAzAIpbIxIRJ6brN289g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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